Obama Tries to Forge an Africa Legacy

DAR ES SALAAM, Tanzania—President Barack Obama, on the last leg of his weeklong Africa tour, confronted two awkward challenges that have shadowed him during the trip: George W. Bush and China.

The arrival of Mr. Obama's predecessor here in the same city at the same time—an unlikely overlap of itineraries that all involved described as coincidental—was another reminder of the legacy Mr. Bush left in the region as president.